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Bulunan: 43 Adet 0.001 sn
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Erişime Açık

On the design and performance analysis of lowcorrelation compact space-multimode diversity stacked microstrip antenna arrays for mımo-ofdm wlans over statistically-clustered ındoor radio channels

Asuman SAVAŞÇIHABEŞ

The support of high spectral efficiency MIMO spatial-multiplexing communication in OFDM-based WLAN systems conforming to IEEE 802.11n standard requires the design and use of compact antennas and arrays with low correlation ports. For this purpose, compact space-multimode diversity provisioning stacked circular multimode microstrip patch antenna arrays (SCP-ULA) are proposed in this paper and their performance in terms of spatial and modal correlations, ergodic spectral efficiencies as well as compactness with respect to antenna arrays formed of vertically-oriented center-fed dipole elements (D ...Daha fazlası

Erişime Açık

Comparison of the electronic transport properties of metallic graphene and silicene nanoribbons

Serhan YAMAÇLI

Carbon-based materials such as carbon nanotubes and graphene nanoribbons are investigated extensively for the near future nanoelectronics technology. Considering the expertise on the processing of silicon, various implementations of silicon counterparts of these nanoscale components such as silicon nanotubes and silicene nanoribbons have also been reported recently. In this work, electronic transport properties of metallic graphene and silicene nanoribbons (GNRs and SiNRs) are compared. Ab initio simulations based on density functional theory combined with non-equilibrium Green’s function form ...Daha fazlası

Erişime Açık

Evaluation of nutritional status of patients with depression

Neriman İNANÇ | Eda BAŞMISIRLI

Aims and Objectives. Our goal was to determine nutritional status, body composition, and biochemical parameters of patients diagnosed with depression based on DSM-IV-TR criteria. Methods. A total of 59 individuals, aged 18–60 years admitted to Mental Health Centre of Kayseri Education and Research Hospital, were included in the study. The participants were randomly assigned to two groups; depression group (𝑛 = 29) and control group (𝑛 = 30). Anthropometric measurements, some biochemical parameters, demographic data, and 24-hour dietary recall were evaluated. Results. 65.5% of depression and 60 ...Daha fazlası

Erişime Açık

Glycemic index values of multifloral Turkish honeys and effect of their consumption on glucose metabolism

Neriman İNANÇ

Background/aim: Clinical trials have shown that low glycemic index (GI) nutrition reduces mean blood glucose concentrations and insulin secretions. The aim of the present study was to determine the GI values of various monofloral (citrus, milk-vetch, chestnut, thyme, lime, pine) honeys of Turkey, and the effect of their consumption on glucose metabolism. Materials and methods: Processing data from 20 healthy volunteers, GI values were determined from the glycemia values by using the incremental area method. Serum insulin and C-peptide levels were also measured before and 120 min after the test ...Daha fazlası

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